| Boss Property Management Ltd. | Hove | 2020 |
| Bossell House Management Company Limited | Buckfastleigh | 1996 |
| Bossington Court Management Company Limited | Staines-Upon-Thames | 1983 |
| Bossom House Freehold Limited | London | 2026 |
| Boston Central Apartments RTM Company Limited | Wellingborough | 2019 |
| Boston Flat Management Limited | Bournemouth | 2006 |
| Boston Gate Management Company Limited | Cambridge | 2018 |
| Boston House (Management) Limited | London | 1985 |
| Boston Lodge (Bournemouth) Limited | Poole | 2003 |
| Boston Manor Road Residents Limited | Penzance | 1996 |
| Boston Property Consultancy Ltd | Tadcaster | 2024 |
| Boston Road Management Company Limited | London | 1995 |
| Boston Sidings Limited | Market Harborough | 2019 |
| Boston Spa Property Services Ltd | Leeds | 2022 |
| Boston West RTM Company Limited | Boston | 2008 |
| Bosun's Point (Paignton) Management Company Ltd | Torquay | 2002 |
| Bosunlake Limited | | 1986 |
| Boswell Court Limited | Bromley | 2002 |
| Bosworth Court (Lichfield) Management Company Limited | New Milton | 2003 |
| Bosworth Grange Management Company Limited | Worcester | 2020 |
| Bosworth House (Leicester) Limited | Mansfield | 2025 |
| Bosworth Manor (Stoke Golding) Management Company Limited | Wilmslow | 2016 |
| Botanic Garden Company Limited(The) | London | 1985 |
| Botanic Garden Trading Company Limited | | 1985 |
| Botanical Court (Head Leasehold) Limited | Stockport | 2024 |
| Botanical House Limited | Sheffield | 2021 |
| Botany Lodge Management Company Limited | Sawbridgeworth | 2023 |
| Boteler Court RTM Company Limited | Chester | 2025 |
| Botham and Baxter RTM Company Limited | Farnham | 2008 |
| Bothband Limited | London | 1997 |
| Botleigh Grange Management Company Limited | London | 2000 |
| Botolph Alley RTM Company Limited | Lewes | 2014 |
| Botolph's Yard (Stamford) Limited | Peterborough | 2020 |
| Botreaux Management Company Limited | Truro | 1987 |
| Bottreaux Rise Management Company Ltd | Camelford | 2025 |
| BOU Properties Ltd | Cardiff | 2019 |
| BOU Property Managers Limited | London | 2019 |
| Boucher Farm Barn Limited | Northampton | 2025 |
| Bough Beech Court (Management) Limited | Croydon | 1978 |
| Boughton Hall Avenue Residents' Association Limited | Woking | 1963 |
| Boughton House Limited | Henley On Thames | 2007 |
| Boughton Management Limited | Faversham | 2008 |
| Boughton Wharf (Rugby) Management Company Limited | New Milton | 2006 |
| Bouldens Orchard Management Company Limited | Truro | 2021 |
| Boulevard East (Greenhithe) RTM Company Limited | Shorne | 2026 |
| Boulevard House Management Limited | Exeter | 2024 |
| Boulevard Management Company (Barnt Green) Limited | Birmingham | 1996 |
| Boulevard West (Greenhithe) RTM Company Limited | Shorne | 2026 |
| Boullandis Limited | London | 1978 |
| Boulmer Residents Company Limited | Peterborough | 2003 |
| Boulsworth View Residents Management Company Limited | Altham | 2019 |
| Boulters (Slough) Management Company Limited | Bourne End | 1984 |
| Boulters Lock Management Company Limited | Windsor | 2007 |
| Boulters Meadow Residents Management Company Limited | Borehamwood | 2012 |
| Boulton Moor (Derby) Management Company Limited | Hinckley | 2016 |
| Boulton Moor (Derby) Properties Limited | York | 2019 |
| Boundaries Mansions Limited | London | 2004 |
| Boundary (Merton) Management Company Limited | Hoddesdon | 1986 |
| Boundary Brook (Harborne) Management Company Limited | New Milton | 2007 |
| Boundary Close Court Residents Association Limited | Kidlington | 1974 |
| Boundary Close Residents Group Limited | Bishop'S Stortford | 2021 |
| Boundary Court (Saltney) Management Company Limited | Chester | 2002 |
| Boundary Court Freeholders (Canterbury) Limited | Whitstable | 2002 |
| Boundary Court Management (Epping) Limited | Epping | 2009 |
| Boundary Court Residents Company Limited | Cambridge | 1985 |
| Boundary Court Residents Management Limited | Stratford-Upon-Avon | 2020 |
| Boundary Edge Management Company Limited | Salford | 2022 |
| Boundary Fields Management Company Ltd | Shrewsbury | 2025 |
| Boundary House (Kings Road) Limited | Harlow | 2013 |
| Boundary House Limited | Gerrards Cross | 1966 |
| Boundary Land Management Company Limited | Bury | 1997 |
| Boundary Management Company (ST Helens ) Limited | St. Helens | 2005 |
| Boundary Oaks Management Company Ltd | Ipswich | 2021 |
| Boundary Park Management Company Limited | Knutsford | 2005 |
| Boundary Property Management Ltd | Swindon | 2019 |
| Boundary Road Associates Management Fund Ltd | Sutton Coldfield | 2005 |
| Boundary Road Properties Limited | London | 2023 |
| Boundary Street Management Company Limited | Southport | 1984 |
| Boundary Way (Saltney) Management Company Limited | Hemel Hempstead | 2007 |
| Bounder Copse Management Company (2010) Ltd | Bishop Auckland | 2011 |
| Bounds Green Management Company Limited | Cheshunt | 2005 |
| Bounty Hall Freehold Limited | London | 2022 |
| Bourchier Street Management Company Limited | Maidstone | 1997 |
| Bourdeaux Limited | Bedford | 2011 |
| Bourn Meadows (Residents) Management Limited | London | 2007 |
| Bourn Vale Management Ltd | Cambridge | 2023 |
| Bourne Banks Property Management Company Ltd. | Bournemouth | 2001 |
| Bourne Close (Bournemouth) Management Co. Limited | Bournemouth | 1986 |
| Bourne Close Flats (Ware) Management Company Limited | Waltham Cross | 1977 |
| Bourne Court Byfleet Limited | Weybridge | 2016 |
| Bourne Drive Ltd | Canterbury | 2018 |
| Bourne Edge (NO 1) Management Company Limited | Malvern | 1990 |
| Bourne Edge (NO.2) Management Company Limited | Gloucester | 1990 |
| Bourne Edge (NO.4) Management Company Limited | Worcester | 1992 |
| Bourne END Residential Management Company Limited | Welwyn Garden City | 2019 |
| Bourne Hall Management Company Limited(The) | Bournemouth | 1984 |
| Bourne Hall Residents Limited | Borehamwood | 1988 |
| Bourne House Management (Ashford) Limited | London | 1979 |
| Bourne House Management (Bournemouth) Ltd | Bournemouth | 2007 |
| Bourne House Management Company Limited | West Midlands | 1982 |